The attack happened around 11 p.m. on Monday at the Clovis Courtyard apartments on Barstow Avenue and Adler Drive.
Police say an argument over loud music quickly escalated to a fight in which one man stabbed another.
The injured man went to Clovis Community Hospital for treatment and is expected to be OK. He said he doesn't know the suspect.
A crime scene unit investigated the scene for evidence as officers continue their search for the suspect's identity.